[Dnsmasq-discuss] read /etc/hosts if DNS disabled

[Matus UHLAR - fantomas]

>On Thu, May 21, 2020 at 03:35:24PM +0200, Matus UHLAR - fantomas wrote:
>> > On Fri, May 15, 2020 at 07:53:50PM +0200, Matus UHLAR - fantomas wrote:
>> > > I have problems configuring static DHCP using /etc/hosts and /etc/ethers.
>> > > It seems that dnsmasq is ignoring /etc/hosts when dns server is disabled
>> > > via "-p 0" option.
>> > >
>> > > Can anyone confirm?
>> > > If I'm right, is this bug or a feature?
>>
>> On 21.05.20 15:03, Geert Stappers wrote:
>> > Advice: Describe "the problem" better.
>>
>> OK.
>>
>> the problem is that DHCP clients listed in /etc/ethers will not be given IP
>> addreses specified in /etc/hosts when dnsmasq does not run DNS service
>> (-p 0), because /etc/hosts is not read in that case.
>>
>> the workaround is to run DNS at different port (e.g.  -p 54), so dnsmasq
>> reads /etc/hosts and provides IPS configured there do clients from
>> /etc/ethers, but I believe /etc/hosts should be read even without DNS,
>> unless explicitly disabled.

On 21.05.20 18:33, Geert Stappers wrote:
>Acknowledge on version 2 of "problem description".
>
>I partially understand what the expectations are.


a litle background:

I used dnsmasq on openwrt router using /etc/ethers for machine<>ethernet
address conversion and /etc/hosts for host to IP conversion (for both DHCP
and DNS).

I bought new router with turris (openwrt clone) which uses knot-resolver
(which uses /etc/hosts for local DNS) and runs dnsmasq only as DHCP server

The problem is that while in this scenario dnsmasq does use the ethers table
(I can see that in reservations info), but it does not use hosts table to
assign proper IP addresses for those hosts.

as a workaround I set dnsmasq to run DNS on another port (I'm thinking on
disabling knot-resolvet) so while the DNS is not used, correct IP addresses
are assigned.

I'd like dnsmasq to read /etc/hosts table for DHCP reservations even when
DNS is not used.

... I know I can work around reservations, but I find /etc/ethers and
/etc/hosts good standards to use

-- 
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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